650 名圣战分子和极端分子在比利时受到监视； 426人被认定为“外国恐怖主义战斗人员”。 650 jihadists and extremists under surveillance in Belgium; 426 identified as "foreign terrorist fighters".

据比利时反恐机构称，有 650 名与圣战和极端主义有联系的人在比利时受到监视。 650 people with jihadist and extremist ties are under surveillance in Belgium, according to its anti-terrorist agency. 在这些人中，有 426 人被确定为“外国恐怖主义战斗人员”，他们曾前往或试图前往冲突地区。 Of these individuals, 426 are identified as "foreign terrorist fighters" who traveled or sought to travel to a conflict zone. 伊斯兰国声称，莫斯科大屠杀造成至少 139 人死亡，之后比利时官员强调他们正在努力防止袭击。 Belgian officials are emphasizing their efforts to prevent attacks, following the Moscow massacre that left at least 139 people dead, claimed by ISIS.